Engine ignition lock



Aug 1927" J. G. SCHULER 1539354 ENGINE IGNITION pocx FiledJuly 2. 1924Patented Aug. 16, 1927.

UNITED stares JOHN GEORGE SCHULEB, OF BUTTON, MONTANA.

ENGINE IGNITION LOCK.

Application filed July 2, 1924. Serial No. 723,773.

This invention relates to improvements in ignition locks for engines.

An important object of this invention is to provide a device of theabove character which will prevent the unauthorized use of an automobileor the like.

A further object of this invention is to provide an ignition controlmechanism which will be automatic in operation.

Other objects and advantages of the invention will be apparent duringthe course of the following description.

In the accompanying drawings forming a part of this specification and inwhich like numerals designate like parts throughout the same,

F igure 1 is a perspective view of the invention, v

Figure 2 is a plan view with the'magnets removed,

- Figure 3 is a side view of the invention, showing some of the parts inelevation and othersin section,

Figure 4 is a view taken on line 4-4 of Figure 3,

Figure 5 is aview of thelock plates and control bar released,

Figure 6 is a view of the lock plates and control bar with the controlbar locked in inoperative position,

Figure 7 is a view taken on line 77 of Figure 3, showing the gearcontrol means, and,

Figure 8 is a diagrammatic view of an ignition system with the inventionconnected thereto.

Reference now being had to the details of the drawings, the numeraldesignates a T shaped base plate, which may be mounted in any suitablemanner to the dash or instrument board of an automobile.

One'end 16 of the base plate 15 is adapted to support an insulatingblock 17 having an electrical contact plate 18 mounted there on, whileits other or forward end19 is bent upwardly at right angles to said baseplate to support latch operating mechanism, which will be hereinaftermore fully described. The contact plate 18 is grounded 59 to an engine(not shown) by means of a I lead wire 20. Imbedded in one end of theinsulating block 17 and insulated from the contact plate 18 is aU-shaped member 21 having connection with a distributor 22 55 throughthe medium of a lead wire 23.

Mounted intermediate the ends of the base Cal plate 15 are standards 24'and 25, the upper The shaft 29 also carries The lower extremities of thestraight edges,

of the lock plates'30 and 32 are provided with recesses 36 adapted toreceive spring projected pawls 37.

Rotatably mounted upon the end. 19 of the base plate is a permutationdial 38 havmg its hollow shaft 39 provided at one end thereof with atoothed gear 40, which meshes with thegear 33. dial 41 has its shaft 42rotatably mounted within the hollow shaft 39 and is provided at one endwith a toothed gear 43 which meshes with the gear 31. The figures of therotatable dials 38 and 41 are. adapted to register with the figures ofthe stationary dial 44 to form various combinations. when the saidrotary dials are moved to predetermined positions. I

A movable lever or bar 45 having one end 46 thereof substantiallyU-shaped and hav ing its other end 47 bent downwardly and outwardly toprovide a linger engaging portion 48, is resiliently mounted forvertical movement upon the'base 15 through the medium of a sliding ortelescoping rod 49. This sliding or telescoping rod 49 is encircled by atension spring 50, having its lowerend secured to the base plate 15 andits upper end secured to the lever or bar 45.

A movable insulating block 51 having upper and lower electrical contactplates 52 and 53- respectively, is provided its opp-o'- site ends withpivot pins 54 which are adapted to engage with openings 55in theU-shaped end of the lever or bar 45. cured to one end of the lowercontact plat 53 isacontact member 56 which is adapted .to engage withthe U-shaped Contact member 21 when the insulating block 51 is lowered,to shunt the current through the distributor 22.

Mounted above the Contact plate 52 and adapted to contact therewith areelectromagnets 57 and 58, the magnet 57 being connected to an ignitionswitch 59 by means of a wire 60 and the magnet 58 connected to A secondpermutation the distributor 22 by means of a Wire 61. Tension springs 62connecting the insulating blocks 1'? and 51 are provided to pull theinsulating block 51 downwardly when the magnets 57 and 58 aredeenergized.

In operation, the ignition switch 59 is closed to energize the magnets57 and 58 and the permutation dials turned so that the lock plates 30and 32 take the position shown in Figure 1. The finger engaging portion48 is then grasped and the lever or bar moved vertically past the springprojected pawls 37 until the plate 52 contacts with the electro-magnets.This action will allow the current to pass from the battery 63 into thedistributor and the engine may then be started. Upon leaving theautomobile the driver opens the ignition switch, causing the magnets tobecome deenergized and the plate 53 and contact member 56 to be pulledinto contact with the plate 18 and contact mem ber 21 by means oftension springs and 62. If the switch is then turned on, the currentwill pass through the contact members 21 and 56 and plates 18 and 53,thereby shorting the ignition circuit. To look the bar 45 againstvertical movement the lock plates are turned to the position shown inFigure 6. To start the automobile it is necessary to again grasp theportion 48 and move the plate 53 into contact with the magnets 57 and58.

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as a preferred example of the same, and thatvarious changes in the shape, size, and arrangement of parts may beresorted to without departing from the spirit of my invention or thescope of the subjoined claims.

Having described my invention, I claim:

1. A look comprising'a support, a bar movably mounted upon the support,electric terminals carried by the support and the bar, a magnet disposedadjacent the bar for holding said bar in position with said terminalsdisengaged when said magnet is energized, locking plates mounted forturning movement and located one at each side of the bar for holdingsaid bar in position with said terminals in engagement, means forturning the plates simultaneously, the plates having peripheral portionsadapted to overlap each other when the plates are turned to one positionand the plates having cut energized, locking plates located one at eachside of the bar and mounted for turning movement for holding said bar inposition with said terminals in engagement, pivoted pawls carried by thelocking plates, the locking plates being cut away at one side to provideclearance space whereby the bar may be received between the plates, andmeans for turning the plates simultaneously.

3. An ignition lock comprising a support, a bar movably mounted upon thesupport, terminals carried by the bar and the support, a magnet locatedadjacent the bar for hold.- ing said bar in position with said terminalsdisengaged when said magnet is energized, locking plates mounted forturning movement and disposed one at each side of the bar for holdingsaid bar in position with said terminals in engagement, means forturning the plates simultaneously, the plates having peri 'iheralportions adapted to overlap each other when the plates are at oneposition and the plates being provided ith cut away peripheral portionswhich are spaced from each other when the plates are turned to anotherposition and whereby the locking bar may be received between the plates,and pivoted pawls carried by the plates at the cutaway peripheralportions thereof.

i. In an ignition lock a bar movably mounted, locking plates mounted forturning movement and located one at each side of the bar, 'd plateshaving cut away peripheral portions, pivoted pawls carried by the platesat the cut away peripheral portions thereof, and means for turning'theplates simultaneously.

In testimony whereof, I have afi'iXed my signature.

JOHN GEORGE SCHULER.

